... , working time 11 hours *Auto Adjust PAL or NTSC CCTV Security Tester:White, Yellow, Cyan, Green, Pink, Red, ... color bar generation to allow technician video inspect SpecificationMODELST89A-4 CCTV Security TesterLCD adjust : Adjustable brightness, contrast, color of ... color bar video signal for testing monitorUTP CABLE TESTUTP cable testTest UTP cable connection state and display in the screen. ...